21000638880

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{373943}}^1$

素因数の和:373980

約数の個数: 192

約数和(自身を含む): 79156465920

約数和(自身を除く): 58155827040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 65, 72, 78, 80, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 180, 195, 208, 216, 234, 240, 260, 270, 288, 312, 351, 360, 390, 416, 432, 468, 480, 520, 540, 585, 624, 702, 720, 780, 864, 936, 1040, 1080, 1170, 1248, 1404, 1440, 1560, 1755, 1872, 2080, 2160, 2340, 2808, 3120, 3510, 3744, 4320, 4680, 5616, 6240, 7020, 9360, 11232, 14040, 18720, 28080, 56160, 373943, 747886, 1121829, 1495772, 1869715, 2243658, 2991544, 3365487, 3739430, 4487316, 4861259, 5609145, 5983088, 6730974, 7478860, 8974632, 9722518, 10096461, 11218290, 11966176, 13461948, 14583777, 14957720, 16827435, 17949264, 19445036, 20192922, 22436580, 24306295, 26923896, 29167554, 29915440, 33654870, 35898528, 38890072, 40385844, 43751331, 44873160, 48612590, 50482305, 53847792, 58335108, 59830880, 67309740, 72918885, 77780144, 80771688, 87502662, 89746320, 97225180, 100964610, 107695584, 116670216, 131253993, 134619480, 145837770, 155560288, 161543376, 175005324, 179492640, 194450360, 201929220, 218756655, 233340432, 262507986, 269238960, 291675540, 323086752, 350010648, 388900720, 403858440, 437513310, 466680864, 525015972, 538477920, 583351080, 656269965, 700021296, 777801440, 807716880, 875026620, 1050031944, 1166702160, 1312539930, 1400042592, 1615433760, 1750053240, 2100063888, 2333404320, 2625079860, 3500106480, 4200127776, 5250159720, 7000212960, 10500319440, 21000638880]

約数ペア:

[(1, 21000638880), (2, 10500319440), (3, 7000212960), (4, 5250159720), (5, 4200127776), (6, 3500106480), (8, 2625079860), (9, 2333404320), (10, 2100063888), (12, 1750053240), (13, 1615433760), (15, 1400042592), (16, 1312539930), (18, 1166702160), (20, 1050031944), (24, 875026620), (26, 807716880), (27, 777801440), (30, 700021296), (32, 656269965), (36, 583351080), (39, 538477920), (40, 525015972), (45, 466680864), (48, 437513310), (52, 403858440), (54, 388900720), (60, 350010648), (65, 323086752), (72, 291675540), (78, 269238960), (80, 262507986), (90, 233340432), (96, 218756655), (104, 201929220), (108, 194450360), (117, 179492640), (120, 175005324), (130, 161543376), (135, 155560288), (144, 145837770), (156, 134619480), (160, 131253993), (180, 116670216), (195, 107695584), (208, 100964610), (216, 97225180), (234, 89746320), (240, 87502662), (260, 80771688), (270, 77780144), (288, 72918885), (312, 67309740), (351, 59830880), (360, 58335108), (390, 53847792), (416, 50482305), (432, 48612590), (468, 44873160), (480, 43751331), (520, 40385844), (540, 38890072), (585, 35898528), (624, 33654870), (702, 29915440), (720, 29167554), (780, 26923896), (864, 24306295), (936, 22436580), (1040, 20192922), (1080, 19445036), (1170, 17949264), (1248, 16827435), (1404, 14957720), (1440, 14583777), (1560, 13461948), (1755, 11966176), (1872, 11218290), (2080, 10096461), (2160, 9722518), (2340, 8974632), (2808, 7478860), (3120, 6730974), (3510, 5983088), (3744, 5609145), (4320, 4861259), (4680, 4487316), (5616, 3739430), (6240, 3365487), (7020, 2991544), (9360, 2243658), (11232, 1869715), (14040, 1495772), (18720, 1121829), (28080, 747886), (56160, 373943)]